Cream - 'Sunshine of Your Love' from 'Disraeli Gears' (1967)
Spanky Wilson - 'Sunshine of Your Love' from 'Doin' it' (1970)
Ralph 'Soul' Jackson - 'Sunshine of Your Love' (circa 1968-70)
Spanky's version has had a lot of exposure over the last few years but Ralph's is less known (in case you're wondering, I found it here). Maybe Jimi and the boys will decide...